Pith Number

pith:6DFH4SES

pith:2012:6DFH4SES2I376KFG35C43UVUNY

not attested not anchored not stored refs pending

Superexpansion as a possible probe of accretion in 4U 1820-30

D. M. Palmer (LANL), J. Homan (MIT), J. J. M. in 't Zand (SRON), L. Keek (MSU)

arxiv:1210.2949 v1 · 2012-10-10 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6DFH4SES2I376KFG35C43UVUNY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:54:03.394014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0ca7e4892d237ff28a6df45cdd2b46e335ab83bb205b7d3f1ae18d4a92f5490

Aliases

arxiv: 1210.2949 · arxiv_version: 1210.2949v1 · doi: 10.48550/arxiv.1210.2949 · pith_short_12: 6DFH4SES2I37 · pith_short_16: 6DFH4SES2I376KFG · pith_short_8: 6DFH4SES

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/6DFH4SES2I376KFG35C43UVUNY \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f0ca7e4892d237ff28a6df45cdd2b46e335ab83bb205b7d3f1ae18d4a92f5490

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6372b39582c2eae8cd0acc5a34b4f1a2a31eba07e3250a7db9fac00697a5f24f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-10-10T15:11:11Z",
    "title_canon_sha256": "567af82a4cab471e8dbb98ce4bd41ae031287f53fd12f3cb72c217a23740bead"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.2949",
    "kind": "arxiv",
    "version": 1
  }
}